Boris Johnson has put in a final submission for a new airport to the Airports Commission - the body deciding how to expand air capacity in the South East - in a bid to get a new airport built in the Thames Estuary.
The Mayor claims a new airport on the Isle of Grain would boost the economy by £7 billion each year and create thousands of jobs, but his plans have attracted criticism in the past.
Yesterday, Medway and Kent Councils, who both oppose the Mayor's plans, published the results of a survey they commissioned that apparently showed five out of six adults would oppose the new airport.
Rival bids include Heathrow and Gatwick airports, each campaigning for a new runway. The Commission is due to make a final recommendation by 2015.